CN106825465A - A kind of crystallizer for preventing slab defects - Google Patents
A kind of crystallizer for preventing slab defects Download PDFInfo
- Publication number
- CN106825465A CN106825465A CN201710142556.8A CN201710142556A CN106825465A CN 106825465 A CN106825465 A CN 106825465A CN 201710142556 A CN201710142556 A CN 201710142556A CN 106825465 A CN106825465 A CN 106825465A
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- water
- bosh
- crystallizer
- water tank
- supplying chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of crystallizer for preventing defect, belong to crystallizer technology field.A kind of crystallizer for preventing defect, including copper coin and water tank, copper coin sets bosh, water tank sets an intake chamber and multiple water-supplying chamber, bosh is connected with intake chamber with water-supplying chamber, at least one is arranged on meniscus surface area for the multiple water-supplying chamber, and at least one is arranged on the lower section of meniscus surface area.The sectional area of bosh diminishes in meniscus surface area, and water-supplying chamber can be with connecting valve, the water-carrying capacity of meniscus surface area is adjusted by controlling current, serve reduction crystallizer meniscus area intensity of cooling, reduce meniscus area contraction change amplitude, make the formation of continuous casting billet and growth evenly, effectively prevention or reduction continuous casting billet is cracked, and improves continuous casting billet quality.
Description
Technical field
The present invention relates to a kind of crystallizer for preventing defect, belong to crystallizer technology field, and in particular to slab, square billet connect
Casting crystallizer technology field.
Background technology
Continuous casting billet has various defects, and the method for preventing various defects from producing is also a lot, wherein the generation of many defects with
Key equipment-the crystallizer of continuous casting is relevant, and many defects of continuous casting billet are produced at meniscus, are derived near meniscus
Heat it is too many and derived heat is uneven, crackle and bleed-out can be caused, in particular with people to generation efficiency requirement, draw
Fast more and more higher, nearby derived heat is more violent for meniscus, and derived heat is more uneven, the crackle for thus causing and
Bleed-out probability increase is more frequent.Strand heat derives rely on taking out of for continuous cast mold cooling water, and continuous casting crystallizer copper plate is cold
But the passage of water is unanimous between the higher and lower levels, and the design of water is all consistent up and down.With the raising of pulling rate, it is desirable to total cooling
Water increases, and heat is certainly more as derived from meniscus, because of the increase of meniscus contraction change amplitude, and causes the meniscus to derive
Heat will be more uneven, defect is naturally more, frequently.
In order to prevent and treat various defects, prior art has the technological means of various solutions.Notification number is the U of CN 203155963
Patent document disclose it is a kind of pour into a mould square billet novel crystallization device, on the basis of plate slab crystallizer, by install shunting dress
Put the production for realizing square billet so that plate slab crystallizer production product has diversified feature；Compared to redesign square billet knot
Brilliant device, the application of part flow arrangement reduces the cost of equipment；The characteristics of there is good heat conductivity, rapid heat dissipation due to part flow arrangement,
Meanwhile, cooling water is passed through so that the partial heat of high-temperature molten steel is taken away through the cooled water of part flow arrangement, improves slab crystallization
The service life of device；In the process of setting of molten steel, each several part green shell is uniformly cooled down, its growth is also more uniform, it is to avoid casting
The generation of the defects such as checking line, bulge, improves the lumber recovery of strand.
But, this patent is really, using plate slab crystallizer wider, narrow side crystallizer to be inserted in width, by slab
Crystallizer is divided into several square blank crystallizers, and the narrow side crystallizer must all be cooled down because of its both sides, so both sides must all have cold
But water hole, rather than so-called shunting, above-mentioned document is big in the water-carrying capacity of meniscus surface area, and heat conduction is uneven, does not have controlling stream
The part of amount, causes heat to conduct uncontrollable, prevents crack defect effect bad.
Notification number discloses a kind of wide-surface copper plate of crystallizer of continuous slab casting machine for the patent document of the U of CN 202155493
Cooling structure, it is unreasonable for current broadside copper board of continuous casting crystallizer for thin slab blank cooling structure, cause face copper coin wide and strand temperature
The problems such as spending inhomogeneous cooling, easily cause copper coin severe crack, low life-span, slab quality defect is improved, wide to crystallizer
Face copper coin cooling water channel is optimized design, and its cooling water channel diameter reduces, quantity increases, and is distributed according to liquid steel temperature
Situation carries out reasonable layout, is effectively improved crystallizer face intensity of cooling wide, improves crystallizer face Temperature Distribution wide, reduces crystallizer
Copper coin surface temperature is poor, improves slab quality.
Above-mentioned patent tank chilling room cools down also uneven every uneven, is changed into water hole uniform, the temperature that can design interval
Distribution is relatively uniform.While cooling, in order to carry out heat conduction, employing the reduction of cooling water channel diameter, quantity increases, and root
Reasonable layout is carried out according to liquid steel temperature distribution situation, is not reduced in the water-carrying capacity of meniscus surface area, it equally exists meniscus
The water-carrying capacity in region is big, and heat conduction is uneven, the part without control flow, causes heat to conduct uncontrollable, prevents crackle to lack
Fall into effect bad.
The content of the invention
In view of this, the purpose of the present invention is directed to the deficiencies in the prior art, there is provided a kind of heat conduction is uniform, in meniscus area
Domain can control the device of cooling flow, solve that meniscus surface area heat conduction present in prior art is uneven, flow can not
Control, so as to cause the technical problem of the defects such as crackle.
To reach above-mentioned purpose, the present invention uses following technical scheme：
A kind of crystallizer for preventing defect, including copper coin and water tank, copper coin set bosh, water tank set an intake chamber and
Multiple water-supplying chamber, bosh is connected with intake chamber with water-supplying chamber, the multiple water-supplying chamber at least one be arranged on meniscus
Region, at least one is arranged on the lower section of meniscus surface area.
Preferably, the bosh is bosh one in meniscus surface area, and meniscus lower section is bosh two, cold
But the sectional area of tank one is less than the sectional area of bosh two.
Preferably, intake chamber is located at water tank bottom, is connected with bosh two, at least one water-supplying chamber and bosh one
Connection, at least one water-supplying chamber connects with the lower end of the bosh one and the upper end of bosh two.
Preferably, the water-supplying chamber one for being connected with bosh one connects with water tank respective channel one, with the bosh
The water-supplying chamber two of the upper end connection of lower end and bosh two connects with water tank respective channel two, the water tank respective channel
One or water tank respective channel two on valve is set.
Preferably, the passage of the intake chamber and water-supplying chamber at most has one to be not provided with flowmeter.
Preferably, the water tank backboard of increased fast changeable including between water tank and copper coin, intake chamber and water-supplying chamber shift
To the water tank backboard.
Preferably, the cooling water inflow of the outflow of outlet pipe one is the 40%~70% of total cooling water inflow.
Preferably, the cooling water inflow of the outflow of outlet pipe one is the 50%~60% of total cooling water inflow.
Preferably, the cooling water inflow of bosh one is adjusted by adjusting the sectional area of bosh one.
Preferably, the cooling water inflow of bosh one is controlled by adjusting the size of the valve opening degree.
The beneficial effects of the invention are as follows：
1st, the present invention sets bosh in copper coin, as the passage of cooling water, it is easy to manufacture, on the water-supply structure of crystallizer
Make change so that water-carrying capacity reduces in meniscus surface area, but total cooling water flow is constant, serves reduction crystallizer bent moon
Face area intensity of cooling, reduces meniscus area contraction change amplitude, makes the formation of continuous casting billet and growth evenly, effectively prevents or subtracts
Few continuous casting billet is cracked, and improves continuous casting billet quality, can meet requirement big to pulling rate in the prior art.
2nd, by setting tap hole, flow is reduced by before current reach meniscus surface area, can be effectively acted as uniform
The effect of cooling.
3 and with integrated use can control water stream channel sectional area or set the technological means of valve specifically to adjust
By the water-carrying capacity of meniscus surface area, the sectional area under the sectional area of the passage in meniscus area is less than, or in water tank phase
Answer passage that valve is set, water-carrying capacity is controlled by the accurate adjustment of valve, current reach the through-current capacity reduction of meniscus area, reaching
To the technique effect of precise control cooling effect so that the water in control meniscus area is very handy, changes meniscus area
Cooling water inflow, making the cooling water inflow in meniscus area reduces, meniscus area intensity of cooling reduction, heat flow density reduce, meniscus
Region extends, and heat transfer is relatively uniform, and, cooling water inflow is not reduced to crystallizer generally speaking, and overall cooling capacity does not change
Become, the factor for producing continuous casting defect in meniscus surface area is substantially reduced, and can effectively eliminate continuous casting defect, the water-flowing amount control of meniscus area
System not only improves reduction continuous casting defect the 40%~80% of total Water, and bonding steel leakage is avoided again.
4th, the present invention can set flowmeter, accurately to determine by the flow of meniscus surface area, convenient research flow
The influence produced to defect, so that specifically chosen suitable flow parameter.
5th, the present invention is also provided and be able to can be easy for installation and removal with quick-replaceable backboard, reduces labour intensity.
6th, the present invention is by specific experiment, and it is 40%~70% to finally obtain the flow of suitable meniscus surface area, best
It is 50%~60%, under this flow, crack defect is few, and continuous casting quality is significantly improved.
Brief description of the drawings
The crystallizer sectional elevation schematic diagram of the tank that Fig. 1 shoals for meniscus surface area.
Fig. 2 is the copper plate of crystallizer sink surface schematic diagram that meniscus tank narrows.
The crystallizer sectional elevation schematic diagram of the tank that Fig. 3 narrows for meniscus surface area.
Fig. 4 is the crystallizer sectional elevation schematic diagram that crystallizer water tank is made up of water tank and water tank backboard.
Fig. 5 is another schematic diagram for the crystallizer sectional elevation that crystallizer water tank is made up of water tank and water tank backboard.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment one:As shown in figure 1, a kind of crystallizer for preventing defect, including copper plate of crystallizer 1 and to crystallizer copper
Plate plays a supportive role and cools down the crystallizer water tank 2 of water flowing effect, and the crystallizer water tank sets an intake chamber 3 and two go out
Hydroecium, the 4a of water-supplying chamber one and the 4b of water-supplying chamber two, the intake chamber 3 is connected with water inlet pipe 5, the 4a of the water-supplying chamber one and outlet pipe one
6a is connected, and the 4b of the water-supplying chamber two is connected with the 6b of outlet pipe two, and valve 7, the outlet pipe two are set on the 6b of the outlet pipe two
6b is connected with valve 7, and the copper plate of crystallizer sets multiple equally distributed boshes, and the bosh is divided into two
Point, Part I is normal bosh 1, and Part II is the bosh 29 shoaled in meniscus surface area, the knot
The 4a of water-supplying chamber one of brilliant device water tank is connected with bosh 29, the 4b of water-supplying chamber two and the cooling water of the crystallizer water tank
The lower end of groove 29 connects with the top of bosh 1, that is, flow into the cooling water of crystallizer water tank, and a part is through the cooling
Tank 29 and the 4a of the water-supplying chamber one flow out with the 6a of outlet pipe one, another part cooling water without the bosh 29, and
The 4b of the water-supplying chamber two and the 6b of outlet pipe two and valve 7 directly to be entered by the top of the bosh 1 and is flowed out, it is described enter
Flowmeter 10 is set on water pipe 5, flowmeter 11 is set on the 6a of the outlet pipe one, flowmeter is set on the 6b of the outlet pipe two
12, by controlling the size of the sectional area of the bosh 29 and the size of the opening degree of the valve 7, so as to realize convection current
The control of the cooling water inflow flowed out through the bosh 29 and the 4a of the water-supplying chamber one and 6a of outlet pipe one, wherein flowing through institute
State bosh 29 and the 4a of the water-supplying chamber one and 40% that the cooling water inflow of the 6a of outlet pipe one outflows is total cooling water inflow~
50%。
Embodiment two:As shown in Figure 2 and Figure 3, a kind of crystallizer for preventing slab defects, including copper plate of crystallizer 1 and right
Copper plate of crystallizer plays a supportive role and cools down the crystallizer water tank 2 of water flowing effect, and the crystallizer water tank sets an intake chamber 3
With Liang Ge water-supplying chamber, the 4a of water-supplying chamber one and the 4b of water-supplying chamber two, the intake chamber 3 connects with water inlet pipe 5, the 4a of the water-supplying chamber one and
The 6a of outlet pipe one is connected, and the 4b of the water-supplying chamber two is connected with the 6b of outlet pipe two, and valve 7 is set on the outlet pipe 6b bis-, described
The 6b of outlet pipe two is connected with valve 7, and the copper plate of crystallizer sets multiple equally distributed boshes, the bosh point
It is two parts, Part I is normal bosh 1, and Part II is the bosh 29 narrowed in meniscus surface area,
The 4a of water-supplying chamber one of the crystallizer water tank is connected with bosh 29, the 4b of water-supplying chamber two of the crystallizer water tank with it is described
The lower end of bosh 29 connects with the top of bosh 1, that is, flow into the cooling water of crystallizer water tank, and a part is through institute
State bosh 29 and the 4a of the water-supplying chamber one to be flowed out with the 6a of outlet pipe one, another part cooling water is without the bosh
29, but the 4b of the water-supplying chamber two and 6b of outlet pipe two and valve 7 are directly entered by the top of the bosh 1 and is flowed out,
Flowmeter 10 is set on the water inlet pipe 5, flowmeter 11 is set on the 6a of the outlet pipe one, by controlling the bosh two
The size of the size of 9 sectional area and the opening degree of the valve 7, thus realize to flow through the bosh 29 and it is described go out
The control of the cooling water inflow of the 4a of the hydroecium one and 6a of outlet pipe one outflows, wherein flowing through the bosh 29 and the water-supplying chamber
The cooling water inflow of the one 4a and 6a of outlet pipe one outflows is the 60%~70% of total cooling water inflow.
Embodiment three：As shown in figure 4, a kind of crystallizer for preventing slab defects, including copper plate of crystallizer 1 and to crystallization
Device copper coin play a supportive role and cool down the crystallizer water tank of water flowing effect, the crystallizer water tank, including water tank 2a and water tank with
The water tank backboard 2b of increased fast changeable between copper plate of crystallizer, sets intake chamber 3 and water-supplying chamber one on the water tank backboard
4a, the 4b of water-supplying chamber two, the intake chamber 3 are connected with water inlet pipe 5, the 4a of the water-supplying chamber one and water tank 2a respective channels and outlet pipe
One 6a is connected, and the 4b of the water-supplying chamber two is connected with water tank 2a respective channels and the 6b of outlet pipe two, is set on the 6a of the outlet pipe one
Valve 7, the 6a of the outlet pipe one is connected with valve 7, and the copper plate of crystallizer sets multiple equally distributed boshes, described
Bosh is divided into two parts, and Part I is normal bosh 1, Part II be meniscus surface area shoal it is cold
But tank 29, the 4a of water-supplying chamber one of the crystallizer water tank is connected with bosh 29, the water-supplying chamber of the crystallizer water tank
Two 4b are connected with the lower end of the bosh 29 and the top of bosh 1, that is, flow into the cooling water of crystallizer water tank,
A part flows out through the bosh 29 and the 4a of the water-supplying chamber one and 6a of outlet pipe one, and another part cooling water is without institute
Bosh 29 is stated, but the 4b of the water-supplying chamber two and 6b of outlet pipe two is directly entered by the top of the bosh 1 and is flowed
Go out, flowmeter 10 is set on the water inlet pipe 5, flowmeter 12 is set on the 6b of the outlet pipe two, by controlling the cooling water
The size of the size of the sectional area of groove 29 and the opening degree of the valve 7, so as to realize to flowing through the bosh 29 and institute
State the control of the cooling water inflow of the 4a of water-supplying chamber one and the 6a of outlet pipe one outflow, wherein flow through the bosh 29 and it is described go out
The cooling water inflow of the 4a of the hydroecium one and 6a of outlet pipe one outflows is the 70%~80% of total cooling water inflow.
Example IV:As shown in figure 5, a kind of crystallizer for preventing slab defects, including copper plate of crystallizer 1 and to crystallization
Device copper coin plays a supportive role and cools down the crystallizer water tank of water flowing effect, the crystallizer water tank, including water tank and water tank and knot
The water tank backboard of increased fast changeable between brilliant device copper coin, sets intake chamber 3 and the 4a of water-supplying chamber one, goes out on the water tank backboard
The 4b of hydroecium two, the intake chamber 3 is connected with water inlet pipe 5, and the 4a of the water-supplying chamber one connects with water tank respective channel and the 6a of outlet pipe one
Logical, the 4b of the water-supplying chamber two is connected with water tank respective channel and the 6b of outlet pipe two, and valve 7, institute are set on the 6b of the outlet pipe two
State the 6b of outlet pipe two to be connected with valve 7, the copper plate of crystallizer sets multiple equally distributed boshes, the bosh
It is divided into two parts, Part I is normal bosh 1, and Part II is the bosh two narrowed in meniscus surface area
9, the 4a of water-supplying chamber one of the crystallizer water tank is connected with bosh 29, the 4b of water-supplying chamber two of the crystallizer water tank and institute
The lower end for stating bosh 29 connects with the top of bosh 1, that is, flow into the cooling water of crystallizer water tank, part warp
The bosh 29 and the 4a of the water-supplying chamber one and 6a of outlet pipe one flow out, and another part cooling water is without the cooling water
Groove 29, but the 4b of the water-supplying chamber two and 6b of outlet pipe two and valve 7 are directly entered by the top of the bosh 1 and is flowed
Go out, flowmeter 11 is set on the 6a of the outlet pipe one, flowmeter 12 is set on the 6b of the outlet pipe two, by controlling the cooling
The size of the size of the sectional area of tank 29 and the opening degree of the valve 7, so as to realize to flowing through the He of the bosh 29
The control of the cooling water inflow of the 4a of the water-supplying chamber one and the 6a of outlet pipe one outflow, wherein flowing through the bosh 29 and described
The cooling water inflow of the 4a of the water-supplying chamber one and 6a of outlet pipe one outflows is the 50%~60% of total cooling water inflow.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (10)
1. a kind of crystallizer for preventing defect, it is characterised in that including copper coin and water tank, copper coin sets bosh, and water tank sets
An intake chamber and multiple water-supplying chamber are put, bosh is connected with intake chamber with water-supplying chamber, the multiple water-supplying chamber at least
Individual to be arranged on meniscus surface area, at least one is arranged on the lower section of meniscus surface area.
2. a kind of crystallizer as claimed in claim 1, it is characterised in that the bosh is cooling water in meniscus surface area
Groove one, meniscus lower section is bosh two, the sectional area of the sectional area less than bosh two of bosh one.
3. a kind of crystallizer as claimed in claim 2, it is characterised in that intake chamber is located at water tank bottom, with bosh two
Connection, at least one water-supplying chamber connects with bosh one, the lower end of at least one water-supplying chamber and the bosh one and cold
But the upper end connection of tank two.
4. a kind of crystallizer as described in claim any one of 1-3, it is characterised in that the water-supplying chamber connected with bosh one
One connects with water tank respective channel one, the water-supplying chamber two connected with the lower end of the bosh one and the upper end of bosh two
Connected with water tank respective channel two, valve is set in the water tank respective channel one or water tank respective channel two.
5. a kind of crystallizer as described in claim any one of 1-4, it is characterised in that the passage of the intake chamber and water-supplying chamber
At most there is one to be not provided with flowmeter.
6. a kind of crystallizer as described in claim any one of 1-5, it is characterised in that including it is increased between water tank and copper coin can
Quick-replaceable water tank backboard, intake chamber and water-supplying chamber are transferred to the water tank backboard.
7. a kind of crystallizer as described in claim any one of 1-5, it is characterised in that the cooling water inflow of the outflow of outlet pipe one is
The 40%~70% of total cooling water inflow.
8. a kind of crystallizer as claimed in claim 7, it is characterised in that the cooling water inflow of the outflow of outlet pipe one is total cooling water
The 50%~60% of amount.
9. a kind of crystallizer as described in claim any one of 2-3, it is characterised in that by the section for adjusting bosh one
The cooling water inflow of product regulation bosh one.
10. a kind of crystallizer as claimed in claim 4, it is characterised in that by the size control for adjusting the valve opening degree
The cooling water inflow of bosh processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142556.8A CN106825465B (en) | 2017-03-10 | 2017-03-10 | A kind of crystallizer preventing slab defects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142556.8A CN106825465B (en) | 2017-03-10 | 2017-03-10 | A kind of crystallizer preventing slab defects |
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| CN106825465A true CN106825465A (en) | 2017-06-13 |
| CN106825465B CN106825465B (en) | 2019-02-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129172A (en) * | 1976-10-27 | 1978-12-12 | Lukens Steel Company | Mold for electroslag remelting process |
| CN2936496Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer formwork equiped with low heat conductive alloy layer in meniscus area water channel |
| CN2936495Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer form work of meniscus area narrow shallow water channel |
| CN202155493U (en) * | 2011-07-08 | 2012-03-07 | 河北钢铁股份有限公司唐山分公司 | Cooling structure for wide-surface copper plate of crystallizer of continuous slab casting machine |
| CN206622583U (en) * | 2017-03-10 | 2017-11-10 | 西峡龙成特种材料有限公司 | A kind of crystallizer for preventing slab defects |
-
2017
- 2017-03-10 CN CN201710142556.8A patent/CN106825465B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129172A (en) * | 1976-10-27 | 1978-12-12 | Lukens Steel Company | Mold for electroslag remelting process |
| CN2936496Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer formwork equiped with low heat conductive alloy layer in meniscus area water channel |
| CN2936495Y (en) * | 2006-07-15 | 2007-08-22 | 西峡龙成特种材料有限公司 | Heat top crystallizer form work of meniscus area narrow shallow water channel |
| CN202155493U (en) * | 2011-07-08 | 2012-03-07 | 河北钢铁股份有限公司唐山分公司 | Cooling structure for wide-surface copper plate of crystallizer of continuous slab casting machine |
| CN206622583U (en) * | 2017-03-10 | 2017-11-10 | 西峡龙成特种材料有限公司 | A kind of crystallizer for preventing slab defects |
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| CN106825465B (en) | 2019-02-22 |
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